Maharashtra Governor Bhagat Singh Koshyari on Monday released a digital book depicting the history of Mumbai General Post Office building. The e-book, titled ''Dawn Under The Dome'' has been authored by Post Master General of Mumbai Swati Pandey in collaboration with Orchida Mukherjee, a Raj Bhavan statement said.

Praising the authors, Koshyari said the GPO building was not just a national heritage, but a national asset too.